[Trescom]

Ahh my bad. In order to play with links color (button links in this example) you need to add another code to the CSS:

.button a:link {
color:#000000;
}

So the whole code should look like this:

.button {
display:inline;
}
.button a {
font-family: "Trebuchet MS", Arial, Helvetica, sans-serif;
font-size:12px;
font-weight:bold;
display: block;
padding:5px 21px;
background:#F9f9f9;
color:#3b5998;
float:left;
text-align:center;
border-top:1px solid  #C9C9DA;
border-right:1px solid #C9C9DA;
border-bottom:1px solid #C9C9DA;
border-left:1px solid #C9C9DA;
}
.button a:link {
color:#000000;
}
.button a:hover {
font-family: "Trebuchet MS", Arial, Helvetica, sans-serif;
font-size:12px;
font-weight:bold;
background:#FFFFE0;
color:#3b5998;
border-top:1px solid #C9C9DA;
border-right:1px solid #C9C9DA;
border-bottom:1px solid #C9C9DA;
border-left:1px solid #C9C9DA;
}

.button a { - is for a color of a normal tekst that you type, but not links
.button a:link { - is to show the color of links
.button a:hover { - is to show the color of links with the mouse over them

There is also a:active state, that show the links after you press them. But it has no use in this example.
I hope this will help you